TiHKAL the Continuation by Alexander and Ann Shulgin

TiHKAL the Continuation is an encyclopedic compendium to entheogens, psychedelics, and the evolution of human consciousness. Written by a dynamic husband and wife combo, Alexander and Ann Shulgin, the story chronicles a government chemist's research into psychedelic substances and his wife's experiences while utilizing the chemicals as tools for psychotherapy. Taking place over a forty year time period, the scope of the book outlasts the carefree days of the 1960's, and asks some difficult questions about the war on drugs and its profits for the American Government and its supporters. TiHKAL also provides readers with scientific formulas for each of the chemicals, as well as methods for extraction and laboratory preparation. The Shulgin's belief in the necessity for disseminating their knowledge further illustrates that these serious scientists believe that their information is crucial for the future of mankind.